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About Jignesh.ParmarJignesh Parmar has completed his B.E(Electrical) from Gujarat University. He has more than 11 years experience in Power Transmission-Power Distribution-Electrical energy theft detection-Electrical Maintenance-Electrical Projects(Planning-Designing-coordination-Execution). He is Presently associate with one of the leading business group as a Assistant Manager at Ahmedabad,India. He is Freelancer Programmer of Advance Excel and design useful Excel Sheets of Electrical Engineering as per IS,NEC,IEC,IEEE codes. He is technical Author for "Electrical Mirror" and "Electrical India" Magazines. He is Technical Blogger and Familiar with English, Hindi, Gujarati, French languages. He wants to Share his experience & knowledge and help technical enthusiasts to find suitable solutions and updating themselves on various Engineering Topics.

IE-64
(iv) State in case of transformers or switches or static condensers involving the use of more than 2,275 litres of oil in one chamber, if suitable oil soak pits are provided.
(v) Where 9,000 litres or more of oil is used in any one oil tank, has provision been made for draining away or removal of oil which may leak or escape from such tank(s)?
9000 liters of oil in any one oil tank, receptacle or chamber is involved,provision shall be made for the draining away or removal of any oil which may leak
or escape from the tanks receptacles or chambers containing the same, special precautions shall be taken to prevent the spread of any fire resulting from the
ignition of the oil from any cause and adequate provision shall be made for extinguishing any fire which may occur. Spare oil shall not be stored in an such
sub-station or switch station.

There is no any indication for Empty Barrel. If The Authorized person said to remove barrel as a safety view than it is understood.Please follow one Golden Rule Do not argue the Person who have authority so follow Instruction of authorized person to sort out issue.

I am working in BHEL as a electrical engineer . Can you please tell me what is the minimum clearance required between 33 KV underground power cable and GAIL gas pipeline. kindly reply me soon with some evident documents .

sir,
In my case the GAIL Gas line is approximately 1000mm below the ground and I am planning to keep power cable 500mm inside PVC conduit below the Gas pipeline, I am unable to execute it due to lack of supporting document, can you please suggest me any source for this.

As per IS 1255
Clearances — The desired minimum clearances are as follows:
Power cable to power cable Clearance not necessary;
however, larger the
clearance, better would be
current carrying capacity
Power cable to control cables : 0.2 m
Power cable to communication cable : 0.3 mPower cable to gas/water main : 0.3 m

my learned sir,
i am not an electrical engineer but as an internal auditor i have to deal with them,here in pakistan.
we installed static meters on connection above 5kw,especially CNG connection escaping by paying penalty against LPF,how ever the kvarh showing,consumer using ground earth system. notices issued to consumer for improving pf but in vain, do i proceed further if u agree. thank you

I have a 500kva generator supply a 53km 33kV line with over 8 transformers along differents points of the load centres. th line is built soundly but has a problem of tripping the generator everytime. i have been told it’s a problem of capacitance build up. can you kindly explain what could be the problem with this line

Hi,
I am interested to buy an apartment near electrical transmission line (it looks like very very high power line).
Builder has maintained distance from centre line of powerline to building at 75 meters..
Is there any health hazard involved in living near high tension line?

For obvious reasons.
But there are indicated minimun values.
The real minimun I believe should be checked against line reactance and other parameters, as there may be for example loses due to these factors.
(btw: i am not electrical, i am civil. Sorry for my comments, may be unaccurate or wrong)

I had also mentioned IE Rules have been replaced with the regulations as, safety measures for Generation Transmission Distribution and Use of Electrical Power have so far been regulated by Indian Electricity Rules 1956 and as amended time to time. These Rules were made as per the Section 37 of Indian Electricity Act 1910 by Central Electricity Board. After enactment of Electricity Act 2003, the Indian Electricity Act 1910 stood repealed as per Section 185 of EA 2003. However the savings from the same section clause (2) (c) states that:
“the Indian Electricity Rules, 1956 made under section 37 of the Indian Electricity Act, 1910 (9 of 1910) as it stood before repeal shall continue to be in force till the regulation under section 53 of this Act are made”
As per the powers conferred to Central Electricity Authority (CEA), by section 177 clause (2) (b) read with section 53 of Electricity Act 2003, stating to provide ‘suitable measures relating to safety and electric supply’notified Regulations were published on website of CEA. Its date of publish in Gazette of India is 24th September 2010.

Dear Completely Agree with You. But Still Lots of Engineer confused between IE Act and IE Rule and it’s revision (Further Grid Code,supply code,GERC for gujarat).I have also faced a problem in one Interview in Power distribution company. I could not succeed to explain interviewer about IE Rule and IE Act. Interviewer himself was confused between IE Rules and IE act.By the way thanks for explained it deeply.

Dear Jignesh
Could you please tell me the minimum clearance of 400 KV line from building, so that the electronics equipements like communication panels, SCADA panels etc. will not be effected from electomagnetic induction.

I intend to purchase an apartment near a 40 feet HT line (voltage unknown, probably 33kV), which is located 7 meters away from the building. Is it safe to buy the house? What are the ill effects of having HT line near residential house? Could you please advise?

Sir, can u please tell me is there any EMF (Electro Magnetic Field) norms in India to be followed for erecting 33 KV overhead line, coz im following all norms as per IE 1956, but still Civil Court have injunction-ed my n stopped my line work

sir, What is the minimum distance clearance from the Diesel tank to EB Sub station …For giving NOC to install 15000 litres Diesel tank in a private company which is very next to EB sub station ..can we allow..if there is an electical burst or disaster in the EB sub station will it affect the diesel tanks of the pvt company

Sir,
Could you please tell us the minimum distance (horizantal) required between an underground storage tank storing class A product (petrol) at a petrol pump and an HT (LT line also).
I have so much, but not able to find any such rule.

Ground clearance,Street Clearance,Side walks for Power line for various voltage and Code is already given in the post of Electrical Safety Clearance from 1 to 4 of this blog.If you need distance in Feet just convert meter in to feet…1Meter=3.28Feet.

Sir i wish to get clear details of the EHT 220kv OH line, Minimum Ground & Vertical Clearance,
the TLM officials are confusing & its making some Unwanted delay & convince ,some times it makes us feel they are taking us for ride & they are harassing.So please request you to kindly give me the proper details. Hoping for a positive response soon
Regards- Ravi

i found voltage between R-phase to neutral was 300V , between Y-phase to neutral was 315V and between B-phase to neutral was 50V, and between earth to neutral was 175V. Neatral was not disconnted. what was reason of high voltage between neutral to earth.

You will not get any difficulty in three phase load but get serious voltage various ion between Phase and Neutral in single Phase Load.
There are lots of Possibility of getting Voltage between Earth & Neutral.
(1) Neural Broken.
(2) Dry Neural Earthing Pit.
(3) Loose Earthing Pit Connection to Transformer Neural.
(4) In distribution There may be interchange between Earthing and Neutral.
(5) In Distribution field somebody locally Earthed Neutral (Except TC Neutral Earthing) (Multiple Neutral Earthing).

hi jignesh
nice to see you running such a useful blog. a 66Kva line passes thru my commercial plot with two poles inside the boundary. i propose to build a shed . can u please suggest me the distance as to how far from the pole end can i start my shed walls and also how far can the slope of shed shud be from the wires???
thanx

Recently i’ve bought a duplex in baroda and after i bought it, i get to know that my duplex is near to this Hyper Tension wire line. after discussion with the builder i found that he has left 12.30ft space between the house and the H. T. Line.

I would like to know
whether it would be sufficient distance between house and H. T. Line?
would there be any precaution i should take?
the house is ground+1 floor, can we build 2nd floor if we want to in future?
can there be any health issues if we leave close by H. T. Line with the distance of 12.30ft?

I do hope that you would be kind enough to enlighten me with your knowledge and experience.

Can you please tell me what should be the gap between LV panel to back side wall and side clearance with anothe LV pannel. and please tell me the same thing with HV pannel
Here LV means 415 V and HV means 6.6KV

How r u? Your knowledge is very useful to us so many many thanks to u.
And want to ask what is the power line crossing clearances for 1200 kV line to another power lines and give the refrence file so I can so to other and in IE rules it is given? If yes than plz. provide it to me.

subsequent to Indian Electricity Act 2003, the basis of Electrical safety also changed wrt said act in place of IE Rule 1956 or rules prior to 2003. Please detail the clauses/acts wrt to Indian Electricity act 2003.

Sir, Pl Clarify if we can build a road across (North to South) of high tension line in our land? There are 2 HT lines running from East to West one 110000volts and the 2nd one is 230000 volts in our site. What is the ground clerence required.

Mr. Jignesh parmar their is a amendment in the indian electricity act 2003 in 2005, u have not mentioned dat here, the standars for safety i.e, the ground clearance is changed…!!!
please have a check on this and then reply

I have one ac high voltage test set , I want to know what is the minimum distance to be leave from the false sealing to phase point , Phase point is at the height 1.5 mtr from the ground level .we will give the voltage between phase to earth with the sample up to 100 kv
,

Please guide me with , the minimum horizontal clearance between the conductor & the building incase of 220KV & 132KV transmission lines. Also do we have to keep some additional clearance for conductor swing due to wind etc.

hello sir,
In my case, 400KV line has been erected by PGCIL without prior notice and no compensation given to us. Is this possible or any electricity act is there to erect without giving compensation. It is huge loss to us because 1.5 hectares land is laid with 400KV line. Please suggest what i can do? can i get compensation? no trees.
from siddu

One of our project we have erected 22kv switchgear for substation and we have used armoured cable that is bottom entry for the switch gear we have removed the outer sheath of the armoured cable for a 0.5meter and connected to the switchgear bus bar.the problem is there is cable tray carrying armoured cables which is used for control purpose to the plc panel which is in bottom trench the distance between the cable tray and 22kv cable is 200mm.
my questions is since The 22kv cable running near by cable tray it will effect the control cable signals in the cable tray.

if yes what should be the distance between the cable tray and 22kv cable as per IEC std
and also send me calculation for this.

The information shared is very much useful . I am planning to buy a flat in chennai near perumbakkam and a HT line of 11 KV is passing 15 meters near the building . I was worried a bit but I am confident to proceed with the plan after reading your article . Thanks a lot .

hello sir,
a 1200 kv electricity transmission line is about to pass above my lawn.the line will be below the terrece of my house at par as the inclination of the line form the lower post to the upper post is around 45-50 degree as it is a slope..my questions to you are,
1)what should be the minimum distance between the wire and the house.???
2:what should be the minimum height of the wire from my lawn..??
3:what are the health risks ???
thank you and regards
yogesh sapkota
sikkim,INDIA

Kindly tell me any standard reference for the horizontal/parallel clearance required for the 400kv proposed transmission line from national highway.presently suggested rout by surveyor is 20m away from the national highway and it is running Parallel to NH upto 4 KM distance.
Can i get any standard which gives clearance details.

Dear,
I am planning to buy flat , which is located somewhat roughly about 500 meters away from 66kV power substation , is it safe . As I am not aware of such things but confused on reading few details on web that it may cause cancer.(emf).
kindly share your knowledge and give your expert view.
Thanks

Hello Sir , I wonder if it is theoretically possible to have 11kv line and 33kv line on the same poles? I understand that minimum separations between 11kv and 33 kv needs to be 355mm, therefore it seems possible . Do you know of any precedents ?

I am Satya, my house is under the 2 lines of high voltage wires, and frequently i am noticing earthing problem for my equipment
can you pls. suggest can i use earth pits for my residence and the wire is 15 feet above from my ceiling
or pls. suggest how to keep my electronic safe

If a transmission line ( 11 Kv/33 KV etc) running parallel to 2X25 Kv traction line for a distance of 1 Km-3 Km
what will the induction effects and what should be minimum horizontal distance to be maintained between traction and transmission lines rnning parallel please post calculations with some examples

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About Jignesh Parmar:

Jignesh Parmar has completed his B.E(Electrical) from Gujarat University. He is member of Institution of Engineers (MIE),India. Membership No:M-1473586.He has more than 12 years experience in Transmission -Distribution-Electrical Energy theft detection-Electrical Maintenance-Electrical Projects (Planning-Designing-Technical Review-coordination -Execution). He is Presently associate with one of the leading business group as a Assistant Manager at Ahmedabad,India. He has published numbers of Technical Articles in "Electrical Mirror", "Electrical India", "Lighting India", "Industrial Electrix"(Australian Power Publications) Magazines. He is Freelancer Programmer of Advance Excel and design useful Excel base Electrical Programs as per IS, NEC, IEC,IEEE codes. He is Technical Blogger and Familiar with English, Hindi, Gujarati, French languages. He wants to Share his experience & Knowledge and help technical enthusiasts to find suitable solutions and updating themselves on various Engineering Topics.

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